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Taylor colliery
Steel timbering, Red Ash Vein, Cooper tunnel, Woodward mine
Concrete fan house, Truesdale mine
Head of no. 3 slope, Truesdale mine
Loomis breaker
Truesdale colliery
Mule barn, Red Ash vein, Woodward mine
Steam plant, Bliss colliery
Cooper tunnel, Woodward mine
Bliss shaft
Concrete arches, Red Ash Vein, Cooper tunnel, Woodward mine
Mule barn, Ross vein, Truesdale mine
Bliss colliery
East Cooper hoist, Woodward mine
Heller Milling Company
Centrifugal pump, Truesdale colliery
Harvey's Lake, Lammot du Pont's family's camp
Correspondence, Richard D. Wende to Henry Algernon du Pont, 1871-11-07
Correspondence, Richard D. Wende to Henry Algernon du Pont, 1871-09-25
The Wapwallopen Mills, 1859-1865
Glen Summit Springs (Mountain Top, Pa.)
Correspondence, C.A. Belin to DuPont Company, 1862-08-18